Nice quality but will not keep it on a keychain as it will be far too easy to lose.
Only
complaints I have, personal preference only- video is not able to be downloaded. I prefer to save it
as I often am practising far away from internet access. Second- with all the videos, it would be
quite nice to have a PDF version. Much easier to refer back and forth rather than jumping around a
video.
This does not detract from the item or the instructions themselves. While several
routines require carrying other items, often they are things we would carry anyway (e.g. cards)